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The short version

  • If a step feels uncertain, stop and use a qualified bicycle mechanic.
  • Never ride with brakes, steering or wheels that you suspect are unsafe.
  • Use the component manufacturer's instructions for torque settings and model-specific procedures.
01

Before you start

Secure and centre the wheel before using the brake to compensate for its position. Inspect the rim track, pads, cable and housing, caliper pivot and mounting, and confirm the tyre is not bulging into the pad path.

  • Use tools that fit the fastener properly
  • Keep small parts in removal order
  • Do not force a seized or cross-threaded component
  • Check the maker's manual for your exact part
02

Separate centring problems from cable problems

A caliper that sits closer to one side may need centring; a lever with excessive travel may need cable or pad adjustment. Check that the wheel is seated centrally before moving the brake to compensate for a wheel-position problem.

Replace badly worn pads or damaged cables rather than using the barrel adjuster to hide them. Pads must stay on the rim track throughout their movement and must never touch the tyre.

A rim that moves from side to side through the pads is a wheel issue, not a caliper-centring setting. Confirm the quick release or axle is secure and the wheel is correctly seated before deciding which component needs attention.

03

Step by step

  1. 1

    Inspect rim, pads, cable and caliper pivot.

  2. 2

    Set pad faces on the rim braking track, never touching the tyre.

  3. 3

    Set cable tension and lever travel with the barrel adjuster or cable clamp.

  4. 4

    Use the centring adjustment provided by the caliper.

  5. 5

    Test hard while stationary and check that the wheel still spins freely.

04

Checks before riding

Apply the lever firmly several times, then confirm both pads remain on the rim track and release without tyre contact. Spin the wheel and check that any changing gap follows the rim rather than repeatedly moving the caliper to chase a wheel fault.

  • Both pads stay on the rim track
  • The caliper releases after every lever pull
  • The tyre remains clear of both pads
  • The wheel is secure and turns without significant brake drag
05

When to use a bike shop

Use a mechanic for a damaged or worn-out rim, frayed cable, cracked pad holder, caliper that does not return or a fixing that will not stay secure. Never continue when pad movement can reach the tyre or lever travel leaves uncertain braking reserve.

Primary sources

Check the current guidance

Rules, schemes and product ranges can change. These live links are the authoritative or independent starting points used for this guide.